Cheats certain females (4)
I believe the answer is:
does
'females' is the definition.
(female deer)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for does that I've seen before include "some antelopes or deer, perhaps" , "Carries out" , "Deer; performs" , "At stag parties don't expect these" , "Tricks" .)